Package org.apache.hadoop.mapreduce.v2.app.job

Examples of org.apache.hadoop.mapreduce.v2.app.job.Task

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    @Override
    public JobStateInternal transition(JobImpl job, JobEvent event) {
      job.completedTaskCount++;
      LOG.info("Num completed Tasks: " + job.completedTaskCount);
      JobTaskEvent taskEvent = (JobTaskEvent) event;
      Task task = job.tasks.get(taskEvent.getTaskID());
      if (taskEvent.getState() == TaskState.SUCCEEDED) {
        taskSucceeded(job, task);
      } else if (taskEvent.getState() == TaskState.FAILED) {
        taskFailed(job, task);
      } else if (taskEvent.getState() == TaskState.KILLED) {
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    this.hsWebServices= new HsWebServices(ctx, conf, webApp);
    this.hsWebServices.setResponse(mock(HttpServletResponse.class));

    Job job = ctx.getAllJobs().values().iterator().next();
    this.jobIdStr = job.getID().toString();
    Task task = job.getTasks().values().iterator().next();
    this.taskIdStr = task.getID().toString();
    this.taskAttemptIdStr =
        task.getAttempts().keySet().iterator().next().toString();
  }
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  private class TaskEventDispatcher implements EventHandler<TaskEvent> {
    @SuppressWarnings("unchecked")
    @Override
    public void handle(TaskEvent event) {
      Task task = context.getJob(event.getTaskID().getJobId()).getTask(
          event.getTaskID());
      ((EventHandler<TaskEvent>)task).handle(event);
    }
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          implements EventHandler<TaskAttemptEvent> {
    @SuppressWarnings("unchecked")
    @Override
    public void handle(TaskAttemptEvent event) {
      Job job = context.getJob(event.getTaskAttemptID().getTaskId().getJobId());
      Task task = job.getTask(event.getTaskAttemptID().getTaskId());
      TaskAttempt attempt = task.getAttempt(event.getTaskAttemptID());
      ((EventHandler<TaskAttemptEvent>) attempt).handle(event);
    }
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    Job job = app.submit(conf);
    app.waitForState(job, JobState.RUNNING);
    Map<TaskId, Task> tasks = job.getTasks();
    Assert.assertEquals("Num tasks is not correct", 2, tasks.size());
    Iterator<Task> taskIter = tasks.values().iterator();
    Task mTask = taskIter.next();
    app.waitForState(mTask, TaskState.RUNNING);
    Task rTask = taskIter.next();
    app.waitForState(rTask, TaskState.RUNNING);
    Map<TaskAttemptId, TaskAttempt> mAttempts = mTask.getAttempts();
    Assert.assertEquals("Num attempts is not correct", 1, mAttempts.size());
    Map<TaskAttemptId, TaskAttempt> rAttempts = rTask.getAttempts();
    Assert.assertEquals("Num attempts is not correct", 1, rAttempts.size());
    TaskAttempt mta = mAttempts.values().iterator().next();
    TaskAttempt rta = rAttempts.values().iterator().next();
    app.waitForState(mta, TaskAttemptState.RUNNING);
    app.waitForState(rta, TaskAttemptState.RUNNING);
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    Job job = app.submit(conf);
    app.waitForState(job, JobState.FAILED);
    Map<TaskId, Task> tasks = job.getTasks();

    Assert.assertEquals("Num tasks is not correct", 1, tasks.size());
    Task task = tasks.values().iterator().next();
    Assert.assertEquals("Task state not correct", TaskState.FAILED, task
        .getReport().getTaskState());
    Map<TaskAttemptId, TaskAttempt> attempts = tasks.values().iterator().next()
        .getAttempts();
    Assert.assertEquals("Num attempts is not correct", 4, attempts.size());
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      }
    }

    Random generator = new Random();
    Object[] taskValues = tasks.values().toArray();
    final Task taskToBeSpeculated =
        (Task) taskValues[generator.nextInt(taskValues.length)];

    // Other than one random task, finish every other task.
    for (Map.Entry<TaskId, Task> mapTask : tasks.entrySet()) {
      for (Map.Entry<TaskAttemptId, TaskAttempt> taskAttempt : mapTask
        .getValue().getAttempts().entrySet()) {
        if (mapTask.getKey() != taskToBeSpeculated.getID()) {
          appEventHandler.handle(new TaskAttemptEvent(taskAttempt.getKey(),
            TaskAttemptEventType.TA_DONE));
          appEventHandler.handle(new TaskAttemptEvent(taskAttempt.getKey(),
            TaskAttemptEventType.TA_CONTAINER_CLEANED));
          app.waitForState(taskAttempt.getValue(), TaskAttemptState.SUCCEEDED);
        }
      }
    }

    GenericTestUtils.waitFor(new Supplier<Boolean>() {
      @Override
      public Boolean get() {
        if (taskToBeSpeculated.getAttempts().size() != 2) {
          clock.setTime(System.currentTimeMillis() + 1000);
          return false;
        } else {
          return true;
        }
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            new TaskAttemptStatusUpdateEvent(taskAttempt.getKey(), status);
        appEventHandler.handle(event);
      }
    }

    Task speculatedTask = null;
    int numTasksToFinish = NUM_MAPPERS + NUM_REDUCERS - 1;
    clock.setTime(System.currentTimeMillis() + 1000);
    for (Map.Entry<TaskId, Task> task : tasks.entrySet()) {
      for (Map.Entry<TaskAttemptId, TaskAttempt> taskAttempt : task.getValue()
        .getAttempts().entrySet()) {
        if (numTasksToFinish > 0) {
          appEventHandler.handle(new TaskAttemptEvent(taskAttempt.getKey(),
            TaskAttemptEventType.TA_DONE));
          appEventHandler.handle(new TaskAttemptEvent(taskAttempt.getKey(),
            TaskAttemptEventType.TA_CONTAINER_CLEANED));
          numTasksToFinish--;
          app.waitForState(taskAttempt.getValue(), TaskAttemptState.SUCCEEDED);
        } else {
          // The last task is chosen for speculation
          TaskAttemptStatus status =
              createTaskAttemptStatus(taskAttempt.getKey(), (float) 0.75,
                TaskAttemptState.RUNNING);
          speculatedTask = task.getValue();
          TaskAttemptStatusUpdateEvent event =
              new TaskAttemptStatusUpdateEvent(taskAttempt.getKey(), status);
          appEventHandler.handle(event);
        }
      }
    }

    clock.setTime(System.currentTimeMillis() + 15000);
    for (Map.Entry<TaskId, Task> task : tasks.entrySet()) {
      for (Map.Entry<TaskAttemptId, TaskAttempt> taskAttempt : task.getValue()
        .getAttempts().entrySet()) {
        if (taskAttempt.getValue().getState() != TaskAttemptState.SUCCEEDED) {
          TaskAttemptStatus status =
              createTaskAttemptStatus(taskAttempt.getKey(), (float) 0.75,
                TaskAttemptState.RUNNING);
          TaskAttemptStatusUpdateEvent event =
              new TaskAttemptStatusUpdateEvent(taskAttempt.getKey(), status);
          appEventHandler.handle(event);
        }
      }
    }

    final Task speculatedTaskConst = speculatedTask;
    GenericTestUtils.waitFor(new Supplier<Boolean>() {
      @Override
      public Boolean get() {
        if (speculatedTaskConst.getAttempts().size() != 2) {
          clock.setTime(System.currentTimeMillis() + 1000);
          return false;
        } else {
          return true;
        }
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   * test HsTasksBlock's rendering.
   */
  @Test
  public void testHsTasksBlock() {

    Task task = getTask();

    Map<TaskId, Task> tasks = new HashMap<TaskId, Task>();
    tasks.put(task.getID(), task);

    AppContext ctx = mock(AppContext.class);
    AppForTest app = new AppForTest(ctx);
    Job job = mock(Job.class);
    when(job.getTasks()).thenReturn(tasks);
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  @Test
  public void testAttemptsBlock() {
    AppContext ctx = mock(AppContext.class);
    AppForTest app = new AppForTest(ctx);

    Task task = getTask();
    Map<TaskAttemptId, TaskAttempt> attempts = new HashMap<TaskAttemptId, TaskAttempt>();
    TaskAttempt attempt = mock(TaskAttempt.class);
    TaskAttemptId taId = new TaskAttemptIdPBImpl();
    taId.setId(0);
    taId.setTaskId(task.getID());
    when(attempt.getID()).thenReturn(taId);
    when(attempt.getNodeHttpAddress()).thenReturn("Node address");

    ContainerId containerId = new ContainerIdPBImpl();
    containerId.setId(1);
    ApplicationAttemptId appAId = new ApplicationAttemptIdPBImpl();
    appAId.setAttemptId(1);
    ApplicationId appId = new ApplicationIdPBImpl();
    appId.setClusterTimestamp(System.currentTimeMillis());
    appId.setId(5);
    appAId.setApplicationId(appId);
    containerId.setApplicationAttemptId(appAId);
    when(attempt.getAssignedContainerID()).thenReturn(containerId);

    when(attempt.getAssignedContainerMgrAddress()).thenReturn(
            "assignedContainerMgrAddress");
    when(attempt.getNodeRackName()).thenReturn("nodeRackName");
    when(attempt.getLaunchTime()).thenReturn(100002L);
    when(attempt.getFinishTime()).thenReturn(100012L);
    when(attempt.getShuffleFinishTime()).thenReturn(100010L);
    when(attempt.getSortFinishTime()).thenReturn(100011L);
    when(attempt.getState()).thenReturn(TaskAttemptState.SUCCEEDED);

    attempts.put(taId, attempt);
    when(task.getAttempts()).thenReturn(attempts);

    app.setTask(task);
    Job job = mock(Job.class);
    when(job.getUserName()).thenReturn("User");
    app.setJob(job);
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Related Classes of org.apache.hadoop.mapreduce.v2.app.job.Task

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  • org.apache.hadoop.mapred.JobConf
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